ESP32-DevKitC is a small-sized ESP32-based development board produced by `Espressif <http://espressif.com>`_. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can connect these pins to peripherals as needed. Standard headers also make development easy and convenient when using a breadboard.
Functional Description
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The following list and figure below describe key components, interfaces and controls of ESP32-DevKitC board.
ESP-WROOM-32
Standard `ESP-WROOM-32 <http://www.espressif.com/sites/default/files/documentation/esp_wroom_32_datasheet_en.pdf>`_ module soldered to the ESP32-DevKitC board.
EN
Reset button: pressing this button resets the system.
Boot
Download button: holding down the **Boot** button and pressing the **EN** button initiates the firmware download mode. Then user can download firmware through the serial port.
USB
USB interface. It functions as the power supply for the board and the communication interface between PC and ESP-WROOM-32.
I/O
Most of the pins on the ESP-WROOM-32 are broken out to the pin headers on the board. Users can program ESP32 to enable multiple functions such as PWM,ADC, DAC, I2C, I2S, SPI, etc.